EP3497430A1 - Method for monitoring the correspondence of a beer sample with a reference beer - Google Patents
Method for monitoring the correspondence of a beer sample with a reference beerInfo
- Publication number
- EP3497430A1 EP3497430A1 EP17751070.8A EP17751070A EP3497430A1 EP 3497430 A1 EP3497430 A1 EP 3497430A1 EP 17751070 A EP17751070 A EP 17751070A EP 3497430 A1 EP3497430 A1 EP 3497430A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- beer
- sample
- samples
- factor
- denotes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 235000013405 beer Nutrition 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 title abstract 2
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 238000000862 absorption spectrum Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000011068 loading method Methods 0.000 claims abstract description 7
- 239000004615 ingredient Substances 0.000 claims abstract description 5
- 238000000513 principal component analysis Methods 0.000 claims abstract description 4
- 238000004566 IR spectroscopy Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 description 9
- 230000001953 sensory effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 101710100266 Serine/threonine-protein phosphatase 6 catalytic subunit Proteins 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 235000019613 sensory perceptions of taste Nutrition 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 230000035923 taste sensation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
- G01N33/14—Beverages
- G01N33/146—Beverages containing alcohol
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8411—Application to online plant, process monitoring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8411—Application to online plant, process monitoring
- G01N2021/8416—Application to online plant, process monitoring and process controlling, not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/12—Circuits of general importance; Signal processing
- G01N2201/129—Using chemometrical methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
- G01N33/14—Beverages
- G01N33/143—Beverages containing sugar
Definitions
- the invention relates to a method for checking the conformity of a beer sample with a reference beer, which are associated with the same type of beer as the beer sample.
- this object is achieved with the features of claim 1.
- These provide that at least 15 reference beer samples were brewed from the reference beer with the same ingredients and the same process parameters that detected by infrared absorption spectroscopy measurement signals for the absorption spectrum of the individual reference beer samples and for the measurement signals carrying out a principal component analysis in which at least 15 main components are determined and a factor charge P R (i, j) is determined for the individual reference beer samples for each main component, where i denotes the reference beer sample and j the main component that consists of the factor charges P R (i , j) one reference value for each reference beer sample and for each major component
- n is the number of reference beer samples
- m is the number of principal components
- a R (j) is the standard deviation of all reference values of the j-th main component
- k is a non-zero constant, that by infrared absorption spectroscopy, an absorption spectrum measurement signal is
- P B this measurement signal and from these factor charges P B (Q, the mean ⁇ ⁇ (/) of the factor loadings of the reference beer samples for each Principal components and the standard deviations a P (j) of these factor charges a characteristic value
- the reference interval is determined with the aid of normalized reference values R (i, j), in which the mean value ⁇ ⁇ (/) of all factor charges of the relevant main component is subtracted from the factor charge P R (i, j) associated with the relevant reference beer sample, and the Amount of this subtraction is divided by the standard deviation of all reference values R (i, j) of this main component.
- the factor charges can be determined by means of a suitable, known per se software. They are also referred to as "scores.”
- the constant k can have any value other than zero, in particular the value 1 or the reciprocal 1 / m of the number m of the main components For example, stored together with the main components and possibly the constant k in a data memory of a microcomputer.
- the method according to the invention can be applied in a simple manner to a large number of beer samples produced in a brewery,
- a measurement signal for the absorption spectrum is recorded from the relevant beer sample by means of a high-resolution absorption spectrometer.
- This absorption spectrum is recorded with the same parameters as the absorption spectra of the reference beer samples.
- the same or at least one identical absorption spectrometer is used for the measurement of the absorption spectrum of the beer sample as for the measurement of the absorption spectra of the reference beer samples.
- characteristic value B can be determined from the measuring signal and the main components, compared with the reference interval, and the result of the comparison displayed. If the comparison gives a discrepancy, the brewmaster or a representative of the brewery can, if necessary, check the quality of the beer sample by tasting and, if necessary, modify the production parameters for the beer production in such a way that the error is compensated or eliminated.
- the microcomputer may be integrated with the absorption spectrometer or its controller. This enables simple on-the-spot checks of beer samples during the ongoing production process. However, it is also possible for the microcomputer to be separated from the absorption spectrometer and to be able to be connected to the absorption spectrometer via a suitable interface in order to read in the measurement signal for the absorption spectrum.
- the number n of reference beer samples is greater than or equal to the number m of the main components, in particular twice as large and preferably at least three times as large as these.
- the number m of the main components is at least 20, optionally at least 30, in particular at least 40 and preferably at least 50. This allows a very precise comparison of the beer sample with the reference beer, which also deviations from beer ingredients can be considered, the only contained in very low concentration in the beer sample and / or the reference beer.
- the reference beer samples and the beer sample are irradiated with infrared radiation whose wavenumber covers the range between 950 and 3050, in particular between 960 and 2000 and preferably between 980 and 1200.
- the sugars contained in the beer have characteristic absorption peaks that can be identified in the spectrum.
- a liquid layer of the beer sample or the reference beer sample is irradiated with infrared radiation.
- the thickness of the liquid layer illuminated by the infrared radiation may be at most 30 ⁇ , optionally a maximum of 20 ⁇ , preferably a maximum of 15 ⁇ and in particular a maximum of 10 ⁇ amount.
- 100 reference beer samples are each brewed with the same ingredients and the same process parameters.
- measurement signals for the absorption spectra of the 100 reference beer samples are recorded in a wavenumber range extending from the wavenumber 980 to the wavenumber 1200.
- Each measurement signal comprises in each case 1000 combinations of values, each of which has at least one value for the wave number and an associated value for the optical infrared absorption of the reference beer sample.
- a principal component analysis is carried out, in which 30 main components are determined with the aid of software known per se.
- a factor charge P R (i, j) is determined for each of the 30 main components.
- the mean value ⁇ ⁇ (/) of all factor charges and the standard deviation a P (j) of these factor charges are determined in each case:
- R (i, j) determines i R (i, l) ⁇ (i, 2) ⁇ (i, 3) R (i, 29) J ⁇ (i, 30)
- the factor charges P B (i) of this measurement signal are determined: ⁇ '( ⁇ )
- the factor charges thus obtained are normalized by subtracting from the respective factor charge P B (j) the mean ⁇ ⁇ (/) of all the reference beer sample factor charges for the main component concerned and the magnitude of the result of this subtraction by the standard deviation a P (j) of these factor charges divided:
- the arithmetic mean value is determined to form a characteristic value B for the beer sample:
- This characteristic value B is compared with the reference interval [9.0368514 ... 33.2298688]. Since the characteristic value B is outside the reference interval, an error in the production of the beer sample is displayed.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Data Mining & Analysis (AREA)
- Theoretical Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Computational Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Medicinal Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Probability & Statistics with Applications (AREA)
- Operations Research (AREA)
- Algebra (AREA)
- Evolutionary Biology (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Bioinformatics & Computational Biology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016009636.5A DE102016009636B4 (en) | 2016-08-10 | 2016-08-10 | Method for checking the conformity of a beer sample with a reference beer |
PCT/EP2017/069698 WO2018029088A1 (en) | 2016-08-10 | 2017-08-03 | Method for monitoring the correspondence of a beer sample with a reference beer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3497430A1 true EP3497430A1 (en) | 2019-06-19 |
EP3497430B1 EP3497430B1 (en) | 2021-01-06 |
Family
ID=59579622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17751070.8A Active EP3497430B1 (en) | 2016-08-10 | 2017-08-03 | Method for verifying conformity of a beer sample with a reference beer |
Country Status (4)
Country | Link |
---|---|
US (1) | US10746654B2 (en) |
EP (1) | EP3497430B1 (en) |
DE (1) | DE102016009636B4 (en) |
WO (1) | WO2018029088A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110455740B (en) * | 2019-07-17 | 2021-11-23 | 武汉科技大学 | Asphalt aging time course prediction method |
ES2955072T3 (en) * | 2019-10-17 | 2023-11-28 | Evonik Operations Gmbh | Method of predicting a property value of a material using principal component analysis |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MY107650A (en) * | 1990-10-12 | 1996-05-30 | Exxon Res & Engineering Company | Method of estimating property and / or composition data of a test sample |
DE10108712A1 (en) * | 2001-02-23 | 2002-09-12 | Warsteiner Brauerei Haus Crame | Method for analytical analysis of a beer sample |
CA2544488A1 (en) * | 2006-05-01 | 2007-11-01 | Chemisch Biochemisch Onderzoekscn | Use of hop polyphenols in beer |
NZ583466A (en) * | 2007-08-13 | 2012-09-28 | Commw Scient Ind Res Org | Barley with low levels of hordein, methods of producing food with low levels of hordein and methods of treating coeliac's disease |
GB0720423D0 (en) * | 2007-10-19 | 2007-11-28 | Univ Leuven Kath | Method for brewing beer |
GB0810251D0 (en) * | 2008-06-05 | 2008-07-09 | Stephenson Group Ltd | Improvements in or relating to gassed beverages |
EP2718691B1 (en) * | 2011-06-09 | 2017-12-13 | QFood GmbH | Method and apparatus for determining the concentration of an analyte contained in a liquid sample |
NL2011388C2 (en) * | 2013-09-05 | 2015-03-09 | Haffmans Bv | DEVICE FOR OPTICALLY DETERMINING THE CONCENTRATION OF ALCOHOL AND CARBOHYDRATES IN A LIQUID SAMPLE. |
DK2846160T3 (en) * | 2013-09-09 | 2016-04-25 | Alfa Laval Corp Ab | Method and device for ølgæring |
US10570357B2 (en) * | 2015-06-17 | 2020-02-25 | University Of Northern Colorado | In-line detection of chemical compounds in beer |
-
2016
- 2016-08-10 DE DE102016009636.5A patent/DE102016009636B4/en active Active
-
2017
- 2017-08-03 US US16/324,292 patent/US10746654B2/en active Active
- 2017-08-03 WO PCT/EP2017/069698 patent/WO2018029088A1/en unknown
- 2017-08-03 EP EP17751070.8A patent/EP3497430B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
US10746654B2 (en) | 2020-08-18 |
EP3497430B1 (en) | 2021-01-06 |
US20190178794A1 (en) | 2019-06-13 |
WO2018029088A1 (en) | 2018-02-15 |
DE102016009636B4 (en) | 2018-07-12 |
DE102016009636A1 (en) | 2018-02-15 |
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